Place a KEEP clause on an output window.
The example creates an input window named TradesWindow and an output window named KeepCountWindow. KeepCountWindow has a KEEP clause that keeps 10 rows at a time in the window.
CREATE OUTPUT WINDOW KeepCountWindow SCHEMA ( Symbol STRING, Ts bigdatetime ) PRIMARY KEY (Ts) KEEP 10 ROWS AS SELECT TradesWindow.Symbol AS Symbol, TradesWindow.Ts AS Ts FROM TradesWindow ;
The example attaches a File CSV Input adapter named InConn to TradesWindow, and a File CSV Output adapter named OutConn to KeepCountWindow.